ata: libata: Remove unused function declaration for ata_scsi_detect()

Remove unused function declaration for ata_scsi_detect().

Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240703184418.723066-13-cassel@kernel.org


Signed-off-by: Niklas Cassel <cassel@kernel.org>